How to Repair a Cyclic Redundancy Check on a Hard Disk

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Repair CRC errors and corrupt file systems with the Check Disk tool.

A cyclic redundancy check error on a hard disk means that part of a file read from the hard disk doesn't match the expected value. A cyclic redundancy check error, in other words, means that files on your hard drive are corrupted. Repair a cyclic redundancy check error on a hard disk using the Check Disk tool in Windows.

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Step 1

Click "Start" and click "Computer."

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Step 2

Right-click the hard disk with the cyclic redundancy check error under "Hard Disk Drives" and click "Properties."

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Step 3

Click the "Tools" tab at the top of the hard disk "Properties" window.

Step 4

Click "Check Now" under "Error Checking."

Step 5

Select "Automatically Fix File System Errors" and "Scan for and Attempt Recovery of Bad Sectors" in the "Check Disk" window by clicking each option if it isn't already selected.

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Step 6

Start a disk check and repair by clicking "Start" in the "Check Disk" window.

Step 7

Click "Yes" if the "Do you want to schedule the disk check to occur the next time you restart the computer?" prompt appears. A disk can't be checked if it's in use, so you'll need to restart Windows to check it.

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Step 8

Restart your computer by clicking "Start," clicking the arrow icon to the right of "Shut Down" and clicking "Restart."

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